The chicago collection by diamond sofa encompasses chic styling, sleek curves and clean lines to create the ideal combination of style and comfort that will become a true centerpiece and gathering place for friends and family alike. The all bonded leather chicago collection features a kiln-dried hardwood frame that is glued and reinforced, offers strength, while the zig zag spring suspension base gives you a supple seating that will hold up for years. The elastic webbing back suspension offers additional stability while allowing for the leather to breathe and maintain its shape. Sleek, deep seat cushions are comprised of a high density foam cushion wrapped in polyester fibers to ensure a comfortable, relaxing and lasting seat. Seat cushions and back pillows are attached to the frame to eliminate shifts or gaps.